Bleach and water solution slows, but does not kill fungus and algae. Berger Sterilizing Solution solves this problem.
Berger Sterilizing Solution is a solution specially formulated to chemically destroy the Caribbean species of fungi and algae that may be remaining on a surface after wire-brushing or power-washing to remove the fungus. Pre-treating the surface is important to ensure maximum durability of the topcoat and is necessary to complete before repainting.